package cn.hchaojie.web.day04;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class LogoutServlet extends HttpServlet {
	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		
		// 退出登陆，让session失效，清除用户信息
		HttpSession session = req.getSession();
		session.invalidate();
		
		// 默认失效时间
		// session.setMaxInactiveInterval(30 * 60);
		
		resp.sendRedirect("login.html");
	}
}
